How to Mimic the Bottom Sheet from the Maps App

How can I mimic the bottom sheet from the Maps app?

I don't know how exactly the bottom sheet of the new Maps app, responds to user interactions. But you can create a custom view that looks like the one in the screenshots and add it to the main view.

I assume you know how to:

1- create view controllers either by storyboards or using xib files.

2- use googleMaps or Apple's MapKit.

Example

1- Create 2 view controllers e.g, MapViewController and BottomSheetViewController. The first controller will host the map and the second is the bottom sheet itself.

Configure MapViewController

Create a method to add the bottom sheet view.

func addBottomSheetView() {
// 1- Init bottomSheetVC
let bottomSheetVC = BottomSheetViewController()

// 2- Add bottomSheetVC as a child view
self.addChildViewController(bottomSheetVC)
self.view.addSubview(bottomSheetVC.view)
bottomSheetVC.didMoveToParentViewController(self)

// 3- Adjust bottomSheet frame and initial position.
let height = view.frame.height
let width = view.frame.width
bottomSheetVC.view.frame = CGRectMake(0, self.view.frame.maxY, width, height)
}

And call it in viewDidAppear method:

override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)
addBottomSheetView()
}

Configure BottomSheetViewController

1) Prepare background

Create a method to add blur and vibrancy effects

func prepareBackgroundView(){
let blurEffect = UIBlurEffect.init(style: .Dark)
let visualEffect = UIVisualEffectView.init(effect: blurEffect)
let bluredView = UIVisualEffectView.init(effect: blurEffect)
bluredView.contentView.addSubview(visualEffect)

visualEffect.frame = UIScreen.mainScreen().bounds
bluredView.frame = UIScreen.mainScreen().bounds

view.insertSubview(bluredView, atIndex: 0)
}

call this method in your viewWillAppear

override func viewWillAppear(animated: Bool) {
super.viewWillAppear(animated)
prepareBackgroundView()
}

Make sure that your controller's view background color is clearColor.

2) Animate bottomSheet appearance

override func viewDidAppear(animated: Bool) {
super.viewDidAppear(animated)

UIView.animateWithDuration(0.3) { [weak self] in
let frame = self?.view.frame
let yComponent = UIScreen.mainScreen().bounds.height - 200
self?.view.frame = CGRectMake(0, yComponent, frame!.width, frame!.height)
}
}

3) Modify your xib as you want.

4) Add Pan Gesture Recognizer to your view.

In your viewDidLoad method add UIPanGestureRecognizer.

override func viewDidLoad() {
super.viewDidLoad()

let gesture = UIPanGestureRecognizer.init(target: self, action: #selector(BottomSheetViewController.panGesture))
view.addGestureRecognizer(gesture)

}

And implement your gesture behaviour:

func panGesture(recognizer: UIPanGestureRecognizer) {
let translation = recognizer.translationInView(self.view)
let y = self.view.frame.minY
self.view.frame = CGRectMake(0, y + translation.y, view.frame.width, view.frame.height)
recognizer.setTranslation(CGPointZero, inView: self.view)
}

Scrollable Bottom Sheet:

If your custom view is a scroll view or any other view that inherits from, so you have two options:

First:

Design the view with a header view and add the panGesture to the header. (bad user experience).

Second:

1 - Add the panGesture to the bottom sheet view.

2 - Implement the UIGestureRecognizerDelegate and set the panGesture delegate to the controller.

3- Implement shouldRecognizeSimultaneouslyWith delegate function and disable the scrollView isScrollEnabled property in two case:

  • The view is partially visible.
  • The view is totally visible, the scrollView contentOffset property is 0 and the user is dragging the view downwards.

Otherwise enable scrolling.

  func gestureRecognizer(_ gestureRecognizer: UIGestureRecognizer, shouldRecognizeSimultaneouslyWith otherGestureRecognizer: UIGestureRecognizer) -> Bool {
let gesture = (gestureRecognizer as! UIPanGestureRecognizer)
let direction = gesture.velocity(in: view).y

let y = view.frame.minY
if (y == fullView && tableView.contentOffset.y == 0 && direction > 0) || (y == partialView) {
tableView.isScrollEnabled = false
} else {
tableView.isScrollEnabled = true
}

return false
}

NOTE

In case you set .allowUserInteraction as an animation option, like in the sample project, so you need to enable scrolling on the animation completion closure if the user is scrolling up.

Sample Project

I created a sample project with more options on this repo which may give you better insights about how to customise the flow.

In the demo, addBottomSheetView() function controls which view should be used as a bottom sheet.

Sample Project Screenshots

- Partial View

Sample Image

- FullView

Sample Image

- Scrollable View

Sample Image

iOS name of UI menu in Apple Maps

It´s not called anything special, but some refer to it as "Card". Here is a great tutorial of how to implement the bottom card as Apple Maps, from the question:

How can I mimic the bottom sheet from the Maps app?

What is the name of the bottom sheet UIKit component used in Apple Maps?

Maps uses a private UI component to achieve this draggable view, so it's not available for third-party apps that are planned to be distributed through the App Store.

As suggested by @ivarun, you can check out Pulley to achieve a similar result in your application. The library uses a custom UIViewController subclass named PulleyViewController, which hosts the drawer's content.



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